[llvm] 595ac8c - GlobalISel: Move getLLTForMVT/getMVTForLLT

[Matt Arsenault via llvm-commits]

Author: Matt Arsenault
Date: 2020-01-09T16:32:51-05:00
New Revision: 595ac8c46ea54c6d5dc96e2f35a5759988a657be

URL: https://github.com/llvm/llvm-project/commit/595ac8c46ea54c6d5dc96e2f35a5759988a657be
DIFF: https://github.com/llvm/llvm-project/commit/595ac8c46ea54c6d5dc96e2f35a5759988a657be.diff

LOG: GlobalISel: Move getLLTForMVT/getMVTForLLT

As an intermediate step, some TLI functions can be converted to using
LLT instead of MVT. Move this somewhere out of GlobalISel so DAG
functions can use these.

Added: 
    

Modified: 
    llvm/include/llvm/CodeGen/GlobalISel/Utils.h
    llvm/include/llvm/CodeGen/LowLevelType.h
    llvm/lib/CodeGen/GlobalISel/Utils.cpp
    llvm/lib/CodeGen/LowLevelType.cpp

Removed: 
    


################################################################################
diff  --git a/llvm/include/llvm/CodeGen/GlobalISel/Utils.h b/llvm/include/llvm/CodeGen/GlobalISel/Utils.h
index 8af2853473c2..429d6db20e0c 100644
--- a/llvm/include/llvm/CodeGen/GlobalISel/Utils.h
+++ b/llvm/include/llvm/CodeGen/GlobalISel/Utils.h
@@ -168,10 +168,5 @@ inline bool isKnownNeverSNaN(Register Val, const MachineRegisterInfo &MRI) {
   return isKnownNeverNaN(Val, MRI, true);
 }
 
-/// Get a rough equivalent of an MVT for a given LLT.
-MVT getMVTForLLT(LLT Ty);
-/// Get a rough equivalent of an LLT for a given MVT.
-LLT getLLTForMVT(MVT Ty);
-
 } // End namespace llvm.
 #endif

diff  --git a/llvm/include/llvm/CodeGen/LowLevelType.h b/llvm/include/llvm/CodeGen/LowLevelType.h
index 687233e4e168..6295d86f749c 100644
--- a/llvm/include/llvm/CodeGen/LowLevelType.h
+++ b/llvm/include/llvm/CodeGen/LowLevelType.h
@@ -17,6 +17,7 @@
 #define LLVM_CODEGEN_LOWLEVELTYPE_H
 
 #include "llvm/Support/LowLevelTypeImpl.h"
+#include "llvm/Support/MachineValueType.h"
 
 namespace llvm {
 
@@ -26,6 +27,14 @@ class Type;
 /// Construct a low-level type based on an LLVM type.
 LLT getLLTForType(Type &Ty, const DataLayout &DL);
 
+/// Get a rough equivalent of an MVT for a given LLT. MVT can't distinguish
+/// pointers, so these will convert to a plain integer.
+MVT getMVTForLLT(LLT Ty);
+
+/// Get a rough equivalent of an LLT for a given MVT. LLT does not yet support
+/// scalarable vector types, and will assert if used.
+LLT getLLTForMVT(MVT Ty);
+
 }
 
 #endif // LLVM_CODEGEN_LOWLEVELTYPE_H

diff  --git a/llvm/lib/CodeGen/GlobalISel/Utils.cpp b/llvm/lib/CodeGen/GlobalISel/Utils.cpp
index 45618d7992ad..eeec2a5d536a 100644
--- a/llvm/lib/CodeGen/GlobalISel/Utils.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/Utils.cpp
@@ -431,20 +431,3 @@ Optional<APInt> llvm::ConstantFoldExtOp(unsigned Opcode, const unsigned Op1,
 void llvm::getSelectionDAGFallbackAnalysisUsage(AnalysisUsage &AU) {
   AU.addPreserved<StackProtector>();
 }
-
-MVT llvm::getMVTForLLT(LLT Ty) {
-  if (!Ty.isVector())
-    return MVT::getIntegerVT(Ty.getSizeInBits());
-
-  return MVT::getVectorVT(
-      MVT::getIntegerVT(Ty.getElementType().getSizeInBits()),
-      Ty.getNumElements());
-}
-
-LLT llvm::getLLTForMVT(MVT Ty) {
-  if (!Ty.isVector())
-    return LLT::scalar(Ty.getSizeInBits());
-
-  return LLT::vector(Ty.getVectorNumElements(),
-                     Ty.getVectorElementType().getSizeInBits());
-}

diff  --git a/llvm/lib/CodeGen/LowLevelType.cpp b/llvm/lib/CodeGen/LowLevelType.cpp
index ca0daa14fedf..d4baf56635e8 100644
--- a/llvm/lib/CodeGen/LowLevelType.cpp
+++ b/llvm/lib/CodeGen/LowLevelType.cpp
@@ -35,3 +35,20 @@ LLT llvm::getLLTForType(Type &Ty, const DataLayout &DL) {
   }
   return LLT();
 }
+
+MVT llvm::getMVTForLLT(LLT Ty) {
+  if (!Ty.isVector())
+    return MVT::getIntegerVT(Ty.getSizeInBits());
+
+  return MVT::getVectorVT(
+      MVT::getIntegerVT(Ty.getElementType().getSizeInBits()),
+      Ty.getNumElements());
+}
+
+LLT llvm::getLLTForMVT(MVT Ty) {
+  if (!Ty.isVector())
+    return LLT::scalar(Ty.getSizeInBits());
+
+  return LLT::vector(Ty.getVectorNumElements(),
+                     Ty.getVectorElementType().getSizeInBits());
+}